Hot-air kegistek



W. TURTON. w

Ho`t-Air Register.

Patented March 16, 1852.

ITD sTATEs PATENT OFFICE.

WILLIAM TURTON, OF BUSHIVICK, YORK.

Ho'itArR REGISTER.

Specification of Letters Patent No. 8,811, dated March 16, 1852.

nexed drawings, making a part of this specii fication, in which- Figure l is a perspective View of the movement with the rim or frame, and a half section of the top or fretwork. i

. Figure 2 is a detached fan with wheel affixed or cast on.

i Figure 3 is a crown wheel.

Figure 4, is a center piece for bearings for the fan.

Fgure 5 is a star orV cross finger piece.

6 is a washer which upholds the fans to the center piece and keeps them in place.

In the principal figure, a corresponds to Fgure 2, Z), c, and (Z, corresponds to Figures 3, 4, and 5, respectively, and e is the outside rim or frame.

The nature of my invention consists in furnishing a crown wheel and gearing it directly to the fans by means of a pinion wheel, or section of the same, attached to each fan, by, which the fans are made to open and shut in an easy, accurate and uniform manner.

I construct my register or Ventilator of `iron or other materlal, in a clrcular, octagon or other form, with a rim or box and fretwork top in the usual manner. The fans I make in a sector form, with pins at each end, one resting in the rim, through which holes are drilled for thatpurpose, and the other on the center piece.

I make the fans eight in number, or more or less, and attach to them Wheels or sections of Wheels. From the top a center shaft is projected downward, to the bottom of which the center piece and fans are secured by a screw and washer. Around this shaft the crown wheel revolves, and being geared into the fans, is moved by the cross or star,

the arms of which pass down to it through the fre'twork. The cross or star is countersunk to receive a pin on top of the shaft, which assists to steady the motion of the wheel. Thus' by a slight pressure of the cross, or star,.finger piece, I am enabled by turning it one eighth of a circle to move the crown wheel sufficiently to open or shut the whole number of fans: The lips on the fans serving as a stop, when closed; and the projecting arms of the finger piece, against portions of the fretwork, answering the same purpose, when they are fully opened.

VVhat I claim, and desire to secure by Letters Patent is The crown wheel or section of a crown wheel, in combination with the pinion wheel or section of wheel attached to the fans, as f IVitnesses:

J. K. INGALLs, T. O. GRAY. 

